Merge branch 'casey/qcom-main-13Apr2026' of https://source.denx.de/u-boot/custodians...

Merge branch 'casey/qcom-main-13Apr2026' of https://source.denx.de/u-boot/custodians/u-boot-snapdragon

Various Qualcomm additions this cycle:
* USB superspeed support for 1 platform
* Initial support for the Milos platform and the Fairphone Gen 6
  (chainloaded from ABL)
* Improved support for booting with OP-TEE on supported platforms
* Initial basic power domain support

Notably there is a generic change to the device core, missing power
domains will no longer cause a device to fail probe and instead will
just print a warning. This shouldn't affect any existing platforms.